Apparatus for vibrating doffer combs



Aug. 6, 1929. H. o. DYx-:ss 1,723,335

APPARATUS FOR VIBRATING DOFFER COMES Filed May 28, 1928 bg W y* 7 jllorneys A Inventor Patented Aug'. 6i, 1929.

' -UNITED `STATES HENRY O. DYESS, OF COLUMBUS, GEORGIA,

ASSIGNOR OF ONE-FOURTH TO J. NQ GREY AND ONE-FOURTH 10 GEORGE W. MURPHY, BOTH OF COLUMBUS, GEORGIA.

, yAPPARATUS FOB VIBRATING DOFFEB CONBS.

- Application filed Hay 28,

\ My invention relates to apparatus for impartingvibratory motion to doffer combs on carding machines and hasfm its object the simplification of designof such apparatus and the provision of a device which shall be cleanly in operation and capable of running for long periods of time with little attention and a minimum of repairs.

A further object of my invention is to provide a device for imparting vibratory motion to dofl'er combs on carding machines which shall be of relatively light weight, easily and quickly set in place and which f shall be adapted to be mounted on either end of the carding machine without change of parts.`

A still further object of my invention is to provide apparatus of the character desig-l nated having simple, effective bearings for the moving parts thereof which shall require a minimum of lubrication and which retain the lubricant so that it does not escape therefrom and contaminate the cotton 4rbeing carded. o

A still further object of my invention is to provide novel mounting means for apparatus of the character designated whereby it may be readily mounted for either right or left hand drive.

Apparatus for imparting vibratory motion to dofl'er combs on carding machines, as heretofore known to me, rhas usually comprised a housing enclosing a rotary driving shaft and an oscillatory driven yshaft with crank and connecting rod means between the driving and driven shafts in order to impart oscillatory motion to the latter. As is well known, the period, or rate of oscillation, Iof the doffer comb is relatively high so that, in order to minimize friction, it has been customary to partially fill the 4housing rwith oil so that the moving parts would run in a bath of oil. Despitek all precaution against it, such as tightly sealing the housing and packing the protruding shafts, the excess oil required for lubricating such apparatus is very difficult to keep Within the housing and it seeps through over the apparatus and along the shafts, finally coming in contact with and contaminating the cotton being carded. The Wastage fromthis cause has heretofore amounted to a considerable sum annually in all cotton mills where apparatus of the prior kart has been employed.

A further difficulty with apparatus of this character, fas'heretofore known to me, has

The difficulties hereto 1928. Serial'No. 281,284.

resided in the fact that it kcould only be mounted to .operate in one relation with respect to the carding machine with which it was associated. It has been accordingly necessary to manufacture the apparatus for right and left hand drive -involving the necessity for mills to carry extra apparatus Aand eXtra, non-interchangeable parts.

These and other difficulties are overcome by means of my invention and I provide an apparatus which is extremely simple of design, capable of being mounted for either right or left hand drive, and which entirely yeliminates the difficulties of lubrication heretofore encountered with apparatus of the prior art. f

Briefly, my invention comprises a frame embodying spaced upright members and a kbase member and having driving and driven shafts mounted in the same vertical plane in the upright members. This feature, together with securing means disposed equidis tantly on opposite sides of the vertical plane passing through the shafts, provides means for reversing the position of the device with respect to its mounting bracket aiid adapts it for either right or left hand drive. The driving and driven shafts are mounted in supporting ball bearings in the upright members and a crank on the driving shaft is connected to a crank on the'driven shaft by an arm also provided with ball bearings whereby friction between the parts is reduced to a minimum. All of the bearings are lubricated by hard grease lubrica- `tion `which is retained in the bearings and only requires infre uent replenishment. fore encountered with respect to oil seepage from apparatus of the prior-art are t us entirely eliminated.

Apparatus embodying features of my invention is illust-rated in the accompanying drawings, forming a part of this application, `wherein Fig. 1 is a vertical sectional view through the apparatus taken along the line I-I of Fig. 2;

l Fig. 2 is a sectional view taken along the line II-II of Fig. 1;

Fig. 3 is an elevational view of the apparatus and showing the cover in section;

Fig. 4 is a plan view of the mounting bracket for the apparatus, and

Fig. 5 is a perspective view of the dust cover.

Referring to the drawings, lshoiv' a U frame comprising spaced upright members 10 and 11 and a base member 12 integral with the upright members. The upper part of the upright member 10 is recessed at 13 to provide a housing for a ball bearing 1st, held in place by a cap 16. `Opposite the ball bearing 14 is a hole 17 through which the doffer comb shaft 18 extends, the latter d 'iving a suitable number of doifer combs 15 as is Well understood. rlhe ball bearing 1asupports a sleeve 19 which has its outer end split at 21, andV which is flattened adjacent the split portion as shown at 22 in Fig. 2.

Mounted over the sleeve 19 is a relatively heavy crank 23 having'a crank arm 24 and an oppositely extending portion 2G for counter balancing the crank arm. rEhe crank 23 is tappedy and threaded to accomodate set screws 27 which serve to close the sleeve 19 around the shaft 18 and firmly hold both the shaft 18 and the crank 23 in place with respect to the sleeve 19. crank 23 are only supported on one end, the other end ovcrhanging the upright portion 11, said portion being cut out at 2O to permit the crank 23 to oscillate freely.

The lower portion of the upright member 11 is provided With a bearing housing 3l enclosing` a pair of spaced ball bearings 32 and 33 which support a driving shaft having a driving pulley 36 mounted on the outer end thereof. The driving shaft 34e has an off-set crank portion 37 on which is mounted a connecting arm 38 having its other end connected to a crank pin 39 on the crank arm 24. rllie connecting rod 38 is provided with bill bearings 41-1' and Ll2 at its connections Wit-h the crank 37 and crank pin 39 respectively.

The ball bearings 32 and 33 are enclosed bythe housing` 31 and by a cap member 43. The ball bearings Ll1 anda-2 are enclosed in lsuitable recesses formed in the connecting arm 38 and by means of a cap member etti over the recesses and the bearings. f It Will thus be seen that the bearings are thoroughly enclosed to prevent escape of lubricant. Grease lubricant is supplied to the bearings 32 and 33 through a. Well known form of nipple 47 adapted for grease gun pressure lubrication. Similar lubricant is supplied to the bearing 14 through a nipple Lubricant for the bearings Ll1 Aand is supplied. through a- `nipple 49 leading to a'passage 51 which communicates with both of the Vbearings Y i In order to minimise vibrationrof theV apparatus, the reciprocatory motion ofthe connecting arm 38 is counterbalanced by means of a Weight 53 mounted on the outer end of the crank 37, While, as has already beeniexplained, t-he oscillatory motion of the crank The sleeve 19 andV 23 is counterbalanced by the countertveight 26.

At 5G -is shown a fragment of the frame of the carding machineupon which is secured a mounting bracket 57. The mount ing bracket 57 is provided at one end with a flange 58 to which is secured a bolt which passes through a lug 61 secured to the frame Onfopposite sides .of the lug 61 are adjusting nuts G2 land 63 to provide slight adJust-ment of the position of the bracket 57 onthe frame 56. rlhe bracket 57 is held to the frame 56 by means of bolts G4: and GG which pass through slots 67 and G8 in the bracket 57, the slots being of such width as to permit slight adjustment of the position of the bracket on the frame.

f lhe base member 12 is provided With a pair of bolt holes 71 and 72 spaced equi-distantly on opposite sides of the vertical plane passing through the shaft-s 18 and 3% While the bracket 57 is provided with tapped holes 73 and 7st for receiving bolts 7G and 77 to seci t, the apparatus to the bracket. It Will be seen, with this arrangement, if the apparatusbe reversed on the bracket, the driving and driven shafts lie in the same vertical 'plane and that the apparatus mav be thus employed for either right or left liand driving.

in fgrperation, a d

the apparatus is enclosed by 1 corel. Si'ivhich snugly fits over the ht members and extends downwardlv The cover 81 seri he double purpose of protecting the apparatus from dust and protecting the Wer nien from moving parts. i

n lfrgni the foregoing Will be apparent l nave devised an improved apparatus for imparti 0' vibratory motion to doifer copmbslon ct 'ding machines which simple or design, free from vibration in operation (Y around the basemember 12.

Vand capable of running for long perious of time With practically no attention and with 4a minimum of near.

o nue lhaiev shown my invention in but term7 it will be obvious to those skilled in the art that it is not so limited but is susceptible of various changes and modificl ions Without departing from the spirit x In Q w K T i 7 their-o1, and i desire` therefore, that only 'such limitations shall be placed thereupon porting bracket and mounted equi-distantly from the 'plane of the driving and driven shafts. y

2. In apparatus for 'imparting vibratory lll() l lo iso 

